# HALOWERK Nordic Land – Finland Surface Elevation (Copernicus DEM GLO-30)

> HALOWERK Nordic Land – Finland Surface Elevation (Copernicus DEM GLO-30) is a paid API for AI agents from nordland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns a bilinearly interpolated surface elevation value in meters for a WGS84 coordinate within Finland, derived from the Copernicus DEM GLO-30 dataset.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/fi-elevation
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-nordic-land-finland-surface-elevation-copernicus-dem-glo-30-b6f4b20b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0za2qxb1f4Ekmzw10aJyw

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-nordic-land-finland-surface-elevation-copernicus-dem-glo-30-b6f4b20b -d '<json body>'
```

Example prompt: What's the surface elevation in meters at latitude 65.0121, longitude 25.4651 in Finland? Use the Copernicus GLO-30 elevation lookup.

## When to prefer this

Choose this endpoint when you need high-resolution (GLO-30, ~30m) bilinearly interpolated surface elevation specifically for coordinates within Finland. It is preferable over generic elevation APIs when you need Copernicus DEM data quality, boundary-validated Finnish coverage, and pay-per-call pricing with no subscription. The sibling endpoints on the same platform also provide complementary soil and terrain metrics for the same coordinate if broader land characterization is needed.

## Known failure modes

- Coordinate outside Finland boundary → request rejected before payment, boundary validation error returned
- Latitude or longitude outside European coverage range (lat 34–72.5, lon -31.5–40.5) → validation error
- Malformed or missing coordinate fields → input schema validation error
- Network or service unavailability → HTTP 5xx error

## How this service works

Bilinear surface elevation from Copernicus DEM GLO-30. The coordinate is validated against the Natural Earth boundary for Finland; results outside it are rejected before payment.

## Output

The API returns a bilinearly interpolated surface elevation value in meters for the requested WGS84 coordinate, sampled from the Copernicus DEM GLO-30 30-meter resolution digital elevation model. Coordinates outside the Natural Earth boundary of Finland are rejected before payment is charged.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "longitude": {
   "type": "number",
   "maximum": 40.5,
   "minimum": -31.5,
   "description": "WGS84 longitude inside the published European coverage."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-nordic-land-finland-surface-elevation-copernicus-dem-glo-30-b6f4b20b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nordland.halowerk.com](https://www.zero.xyz/host/nordland.halowerk.com/llms.txt)